I don't think it's not in Nim because of parsing problems, it just doesn't look as a floating point value, especially at the end of a sentence - it then just looks as sentence terminator (and is even used so say in SmallTalk). And with all Nim's `x and y` vs. `x&&y`, `if x: y else: z` vs. `x?y:z`, `var x: int` vs. `int x`, yet `addr`, would saving here just one character be in line?
I didn't know it's widespread in C-like languages, but it's not an issue for them any way. Yes, this syntax can then be expected by some newcomers, until the overall Nim's style is taken into account. Turns out, it's even allowed in JS and PHP. Yet I've never met it in any code. And a search through a bunch of JS libraries (even packed) did not give any example.
